mirror of
https://github.com/Ryujinx/Ryujinx.git
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6b23a2c125
* Start implementing a new shader translator * Fix shift instructions and a typo * Small refactoring on StructuredProgram, move RemovePhis method to a separate class * Initial geometry shader support * Implement TLD4 * Fix -- There's no negation on FMUL32I * Add constant folding and algebraic simplification optimizations, nits * Some leftovers from constant folding * Avoid cast for constant assignments * Add a branch elimination pass, and misc small fixes * Remove redundant branches, add expression propagation and other improvements on the code * Small leftovers -- add missing break and continue, remove unused properties, other improvements * Add null check to handle empty block cases on block visitor * Add HADD2 and HMUL2 half float shader instructions * Optimize pack/unpack sequences, some fixes related to half float instructions * Add TXQ, TLD, TLDS and TLD4S shader texture instructions, and some support for bindless textures, some refactoring on codegen * Fix copy paste mistake that caused RZ to be ignored on the AST instruction * Add workaround for conditional exit, and fix half float instruction with constant buffer * Add missing 0.0 source for TLDS.LZ variants * Simplify the switch for TLDS.LZ * Texture instructions related fixes * Implement the HFMA instruction, and some misc. fixes * Enable constant folding on UnpackHalf2x16 instructions * Refactor HFMA to use OpCode* for opcode decoding rather than on the helper methods * Remove the old shader translator * Remove ShaderDeclInfo and other unused things * Add dual vertex shader support * Add ShaderConfig, used to pass shader type and maximum cbuffer size * Move and rename some instruction enums * Move texture instructions into a separate file * Move operand GetExpression and locals management to OperandManager * Optimize opcode decoding using a simple list and binary search * Add missing condition for do-while on goto elimination * Misc. fixes on texture instructions * Simplify TLDS switch * Address PR feedback, and a nit
85 lines
2.9 KiB
C#
85 lines
2.9 KiB
C#
using Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions;
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using Ryujinx.Graphics.Shader.IntermediateRepresentation;
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using Ryujinx.Graphics.Shader.StructuredIr;
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using System;
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namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
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{
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static class TypeConversion
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{
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public static string ReinterpretCast(
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CodeGenContext context,
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IAstNode node,
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VariableType srcType,
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VariableType dstType)
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{
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if (node is AstOperand operand && operand.Type == OperandType.Constant)
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{
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if (NumberFormatter.TryFormat(operand.Value, dstType, out string formatted))
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{
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return formatted;
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}
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}
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string expr = InstGen.GetExpression(context, node);
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return ReinterpretCast(expr, node, srcType, dstType);
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}
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private static string ReinterpretCast(string expr, IAstNode node, VariableType srcType, VariableType dstType)
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{
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if (srcType == dstType)
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{
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return expr;
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}
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if (srcType == VariableType.F32)
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{
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switch (dstType)
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{
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case VariableType.S32: return $"floatBitsToInt({expr})";
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case VariableType.U32: return $"floatBitsToUint({expr})";
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}
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}
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else if (dstType == VariableType.F32)
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{
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switch (srcType)
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{
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case VariableType.Bool: return $"intBitsToFloat({ReinterpretBoolToInt(expr, node, VariableType.S32)})";
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case VariableType.S32: return $"intBitsToFloat({expr})";
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case VariableType.U32: return $"uintBitsToFloat({expr})";
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}
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}
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else if (srcType == VariableType.Bool)
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{
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return ReinterpretBoolToInt(expr, node, dstType);
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}
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else if (dstType == VariableType.Bool)
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{
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expr = InstGenHelper.Enclose(expr, node, Instruction.CompareNotEqual, isLhs: true);
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return $"({expr} != 0)";
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}
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else if (dstType == VariableType.S32)
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{
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return $"int({expr})";
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}
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else if (dstType == VariableType.U32)
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{
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return $"uint({expr})";
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}
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throw new ArgumentException($"Invalid reinterpret cast from \"{srcType}\" to \"{dstType}\".");
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}
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private static string ReinterpretBoolToInt(string expr, IAstNode node, VariableType dstType)
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{
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string trueExpr = NumberFormatter.FormatInt(IrConsts.True, dstType);
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string falseExpr = NumberFormatter.FormatInt(IrConsts.False, dstType);
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expr = InstGenHelper.Enclose(expr, node, Instruction.ConditionalSelect, isLhs: false);
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return $"({expr} ? {trueExpr} : {falseExpr})";
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}
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}
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} |